Computing-scale.



No. 700,919. Patented May 27, I902. A. B. HAYDEN.

COMPUTING SCALE.

(Application filed Sept. 8, 1899.) (No Model.) 2 Sheets-Sheet I.

No. 700,9l9. Patented May 27, I902.

A. B. HAYDEN.

COMPUTING SCALE.

(Application filed Sept. 8, 1899.)

2 Sheets-Sheet 2,

(No Model.)

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UNITED STATES PATENT OFFICE.

AUSTIN B. HAYDEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO COMPUTING SCALE COMPANY OF AMERICA, A CORPORATION OF NEW JERSEY.

COM PUTlNG-SCALE.

SPECIFICATION forming part of Letters Patent No. 700,919, dated May 27, 1902.

Application filed SeptcmherS, 1899. Serial No. 729,876. (No model.)

To ctZl whont it; may 0077108770.

Be it known that I, AUsTIN B. HAYDEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Computing-Scales, of which the following is a specification.

My invention relates particularly to an llIlprovement in computing-scales of the springbalance type, my object being especially to increase the computing capacity of scales of this type.

In the accompanying drawings, illustrating myinvention, Figure 1 is a View in frontelevation of a spring-balance computing-scale embodying my improvements in preferred form; Fig. 2, an enlarged broken view of the computing-cylinder and its casing; Fig. 3, a broken vertical sectional view of the same, and Fig. t a horizontal section at line 4 of Fig. 3.

A represents a standard, which may be of a variety of forms; B, a vertically-disposed nonrotatable cylindrical casing supported from said standard through the medium of lugs h; C, a vertical computing-cylinder j ournaled in the casing B; D, a load-hanger comprising an upper cross-piece Ct, provided with a threaded stem at, which projects upward through the casing-top and is supplied with nuts a 0. and is provided also with perforated enlargements a, serving to receive downward-projecting guide-pins of, spring-coils a, and a lower cross-piece a E, a combined load-supporting and cylinder-actuating rod, and F a load-pan or suspended weighing-platform.

The casing-cylinder B is provided with a vertical slot 1), along one margin of which is a price-index indicating cents per pound. The price-index preferably is numbered from bottom to top, the prices shown ranging from two cents to thirty cents. A fine hair wire 1) divides the slot longitudinally for convenience in reading.

The computing-cylinder, which revolves as the rod E is drawn downward, is provided with circumferential columns, the lower one of which preferably is graduated to pounds and ounces, the pound-lines being indicated by numbers. Above the weight-index appear the computations, each computation being set above its appropriate weight-index and opposite its appropriate price-indexnumber. Thus above the weight-index number 5, Fig. 2, and opposite the price-index number a occurs the computation 20, which is the cost of live pounds at four cents per pound.

For economy of space certain computations only of each horizontal circumferential column are written out. The spaces between the written numbers of each column are graduated to pennies, so that the exact cost for any given weight may be readily computed. Thus in Fig. 2 directly above the mark 0, indicating five pounds four ounces, and opposite the price-index number 4 occurs the penny graduation 0', indicating that one cent is to be added to twenty cents to give the cost of five pounds four ounces.

The cylinder C is supported at its base on ball-bearings, which move in a horizontal circular channel on the inner surface of the bottom of the cylinder 13. The rod E is provided with a spiral groove of very high pitch, which moves between rollersf and f, journaledin lugs f centrally located on the inner surface of the bottom of the cylinder C. The shafts f f of the rollers are connected by springs f and the lugs are provided with slots f to permit yielding.

V In the construction shown the spiral of the rod E has such a direction as to cause the cylinder C to rotate to the front and left. Fig. 2 shows the position after the cylinder has rotated from the zero-point to the number 5 of the pound-index.

It will be noted that in the construction shown the rod E is non-rotatable, and this is the preferred construction. The spiral rod passing through the lower ends of the casing and serving, by means of its connection with the two cylinders, to rotate the computingcylinder is regarded as the essence of this feature of the invention, however, regardless of the precise details of connection between cylinders and rod. The spiral of the rod E may be regarded as a motion translating member, and the antifriction-rollers ff, engaging said spiral, may be regarded as an antifriction member coactin g with said spiral. It is necessary that one of said motion-translating members he supported by the spring of the scale to have a simple vertical movement and that the other motion-translating member shall be connected directly to the computing-cylinder to impart rotary motion thereto. Thus one of said motion-translating members moves with the computingcylinder about a vertical axis, while the other acts as a spring-supported runner which engages the cylinder carried or connected member and has its own vertical movement translated into a rotary movement.

I/Vhen a weight is thrown upon the pan F, the rod E is drawn sharplydown, causing the cylinder 0 to revolve. The device comes quickly to rest, however, because of the fact that the inertia of the cylinder 0 acts always contrary to the movements of the rod E. Thus, the scale is almost wholly devoid of the series of short vertical movements peculiar to spring-balance scales, enabling a quick reading to be taken.

Changes in details of construction within the spirit of my invention may be made. Hence no limitation is to be understood by the precise description given above, except as may appear from the appended claims.

lVhat I claim as new, and desire to secure by Letters Patent, is-

1. In a spring-balance com putingscale, the combination of a suitably-supported vertical non-rotatable casing provided with a priceindex, a vertical rotatable computing-cylinder journaled in said casing, provided with cost computations, a spring-supported loadbearing and cylinder-revolving rod suspended from said casing, and connecting means between rod and computing-cylinder, whereby by longitudinal movement of the rod rotary movement is imparted to said cylinder, substantially as and for the purpose set forth.

2., In a spring-balance computing-scale, the combination of a suitably-supported vertical non-rotatable casing provided with a priceindex, a vertical rotatable computing-cylinder journaled in said casing, )rovided with cost computations, a spring-supported loadbearing and cylinder-revolving rod non-rotatably suspended from said casing, and connecting means between said rod and computing-cylinder,whereby longitudinalmovement of the rod produces rotary movement of the cylinder, substantially as and for the purpose set forth.

3. In a spring-balance computing-scale, the combination of a suitably-supported vertical non-rotatable casing provided with a priceindex, a vertical rotatable computing-cylinder journaled in said casing, provided with cost computations, a spring-supported loadbearing and cylinder-revolving rod non-rotatably suspended from said casing, said rod being provided with a spiral, and rollers journaled in said cylinder and engaging said spiral, whereby longitudinal movement of the rod turns the cylinder, substantially as and for the purpose set forth.

4. In a spring-balance scale, a suitably-supported non-rotatable casing provided with a vertical slot, a price-index on a margin of said slot, a vertical computing-cylinder journaled in said casing, ball-bearings between the bottom of said cylinder and the bottom of said casing, a load-supporting rod passing through central perforations in the bottoms of said casing and cylinder, and provided with a spiral, spring connection between said rod and the top of said casing, and rollers journaled on the inner surface of the bottom of said cylinder and contacting with said spiral, whereby longitudinal movement of the rod produces rotary movement of the spiral, substantially as and for the purpose set forth.

5. In a springbalance scale, a suitably-supported non-rotatable casing provided with a ver ical slot, a price-index on a margin of said slot, a vertical computing-cylinder journaled in said casing, a load-supporting rod extending within said cylinder, a spring load-hanger D provided with a non-rotatable top crosspicce a having a threaded stem a equipped with nuts and provided also with means for preventing rotation, said hanger I) having spring connection with said rod, and connections beween rod and cylinder, whereby the rod in moving longitudinally turns the cylinder substantially as and for the purpose set forth.

6. In a spring-balance, the combination of a non-rotating frame providing an external casing and having means for supporting it from above, weighing-springs secured at their upper ends to rigid parts of said frame, a vertically-movable runner which is suspended from the lower ends of said springs and is provided with depending means to support the load, a chart-drum rotatably mounted within said casing on a vertical axis and having external horizontal rows of value-indicating figures computed at different rates, said casing having a sight-opening through which portions of said value-indicating rows may be seen, and corresponding rate-indicating figures on the outer face of said frame adjacent to the value-indicating rows on the chartdrum, and mechanism for translating the vertical movement of the runner into the rotary movements of the chart-drum.

7. In a spring-balance, the combination of an external non-rotating frame adapted to be supported from above, weighing-springs secured at their upper ends to rigid parts of said frame, a vertically-movable runner which is suspended from the lower ends of said springs and is provided at its lower end with means to support the load beneath it, a chart-drum rotatably mounted within said frame on a vertical axis and having external horizontal rows of value-indicating figures computed at different rates, said external frame being apertured whereby portions of said value-indicatin g rows may be seen, and corresponding rateindicating figures on the outer face of said frame adjacent to the value-indicating rows on the chart-drum, and mechanism for translating the vertical movements of the runner into the rotary movements of the chart-drum, substantially as specified.

8. In a spring-balance, the combination of an external non-rotating frame, weighingsprings supported from said frame, a verticallymovable runner which is suspended from said springs and is provided at its lower end with means to support the load beneath it, a chart-drum rotatably mounted within said frame on a vertical axis and having external horizontal rows of value-indicating figures computed at different rates, said external frame being provided with a vertical aperture, whereby portions of said value-indicating rows may be seen, and corresponding rate-indicating figures on the outer surface of said frame adjacent to said aperture and corresponding with said value-indicating rows on the chart-drum, and mechanism for translating the vertical movements of the runner into the rotary movement of the chartdrum.

9. In a spring-balance computing-scale, the combination of a suitably-supported vertical non-rotatable casing provided with a priceindex, a vertical rotatable computing-cylinder journaled in said casing and provided with circumferential rows of cost computations, a central vertical spiral-equipped motion-translating rod, a spring supported from the casing, a motion-translating antifriction member engaging said spiral, one of said motion-translating devices being supported by said spring to move vertically and the other connected with said cylinder to transmit rotary motion to said cylinder, and a load-pan supported from said spring-supported m0- tion-translating member, substantially as and for the purpose set forth.

10. In a price-scale, the combination of a outer cylinder having an opening in one face thereof, a second cylinder rotatably mounted in said first cylinder, notations upon one of said cylinders to indicate the weight of an article and its total price and correlated notations on the other cylinder to indicate the price per unit of weight, a rod for suspending the article being weighed fixed against rotation,and a screw connection intermediate said rod and the rotatable cylinder.

11. In a price-scale, the combination of an outer cylinder having an opening in one face thereof, a second cylinder rotatably mounted in said first cylinder, notations upon one of said cylinders to indicate the weight of an article and its total price and correlated notations on the other cylinder to indicate the price per unit of weight, a rod for suspending the article being weighed fixed against rotation, said rod being provided with a screwthread throughout a portion of its length, and rollers carried by the rotatable cylinder and bearing directly upon said screw-thread ed portion of the rod.

AUSTIN B. HAYDEN.

In presence of EDWARD H. AMENDT, D. W. LEE. 

